VOCAL MIMICRY today is popular as entertainment, but it's also said to have had its practical uses in the past. In primitive society, people blew on leaves and bone whistles to imitate the calls of...
Please login first!
VOCAL MIMICRY today is popular as entertainment, but it's also said to have had its practical uses in the past. In primitive society, people blew on leaves and bone whistles to imitate the calls of...